From NOAA: This map "shows where July 2012 temperatures were different from the 1981-2010 average across the contiguous United States. Shades of red indicate above-average temperatures and shades of blue indicate below-average temperatures the darker the color, the more unusual the temperature difference."

"The average temperature for the contiguous U.S. during July was 77.6°F, 3.3°F above the 20th century average, marking the warmest July and all-time warmest month on record for the nation in a period of record that dates back to 1895. The previous warmest July for the nation was July 1936, when the average U.S. temperature was 77.4°F."